JP3022122B2 - Mirror holder mounting structure and rearview mirror using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is, back of the mirror holder
Relates to the mirror holder mounting structure in Kumira apparatus body formed by freely Hamada', rearview mirror details using mirror holder mounting structure and it was difficult to break the fitting pawl with smaller than detachment load the mounting load of Mirahoru Zehnder About.

[0002]

2. Description of the Related Art Conventionally, in a door mirror or the like, a mirror holder in which a mirror portion is detachable from a rearview mirror device body from the viewpoint of facilitating assembly and facilitating repair of breakage of the mirror. Has been proposed.

For example, Japanese Utility Model Publication No. 4-59561 describes
In such a rearview mirror , a mirror holder mounting structure shown in FIG. 11 is disclosed. In the figure, the back
A cylindrical bar 51 is provided near the upper and lower ends of a pivot plate 50, which is a member on the mirror device body side. A fitting claw that fits with the cylindrical bar 51 is provided on a mirror holder 52 to which a mirror (not shown) is fixed. 53 are provided. Then, the pivot plate 50 and the mirror holder 52 can be freely fitted and removed by fitting or releasing the fitting. In addition, the bag described in Japanese Utility Model Laid-Open No. 1-154941.
Oite the mirror, the mirror holder mounting structure shown in FIG. 12 is disclosed. In the figure, a columnar bar 51 is provided near one end of the pivot plate 50, and a fitting groove 56 is provided near the other side end. Further, the mirror holder 52 is provided with a hook 54 that engages with the cylindrical bar 51 and a fitting claw 55 that fits with the fitting groove 56, and is detachable .

[0004]

However, the conventional configuration described above has the following problems. In the present specification, the maximum load required to fit the fitting claw and the cylindrical bar is defined as “mounting load”, and the maximum load required to release the fitting is defined as “removal load”. Is defined. The load during installation and removal is simply referred to as “load”.

A mirror mounted on an automobile or the like is subjected to various vibrations and the like during traveling, and if the removal load is small, the mirror holder 52 and the pivot plate 50 may come off, which is dangerous. Therefore, it is necessary to set a large removal load from the viewpoint of safety.

On the other hand, when assembling the pivot plate 50 and the mirror holder 52, it is necessary to align the cylindrical bar 51 and the like with the fitting claw 53 and the like. Usually, such mounting work is performed manually, and when an inexperienced person or a work process is involved, a load may be applied in a state where the alignment is not completely performed.

However, from the viewpoint of safety described above, the mounting load is set to be large in order to increase the removal load (a load that must be hammered in at the base of the hand, etc.), causing a positional shift. However, there is a problem that the worker cannot easily recognize the load, and the load concentrates on the base K of the fitting claw 53 (see FIG. 13), which may damage the fitting claw 53 and the like. Therefore, it is desired to reduce the mounting load to facilitate the assembly operation.

In view of this, a mirror holder mounting structure that makes the fitting claws difficult to break and has a small mounting load and a large removal load is desired. However, in the conventional structure, the mounting load and the removal load have a proportional relationship. Since such a demand could not be satisfied, the assembly was performed with careful alignment.
Therefore, the work efficiency has been reduced, which has been a factor of cost increase.

Further, mirrors are widely used from small vehicles such as motorcycles to large vehicles such as dump trucks, and have different sizes (ie, weights). There was a problem that the removal load had to be appropriately set in consideration of the dimensions and the material of the device. In addition, since the fitting claw 53 and the like are generally made of a synthetic resin, the elastic modulus is greatly different between summer and winter, the mounting load is performed in a low temperature state (assuming winter), and the removal load is in a high temperature state. (Assuming summer).
For this reason, the design margin is very severe.

Therefore, the present invention provides a mirror holder mounting structure which makes it possible to assemble with a small mounting load and makes it possible to assemble with a small mounting load while making the fitting claws hard to break, thereby increasing the tolerance of positioning accuracy. And a rearview mirror using the same.

[0011]

In order to solve the above problems, the present invention provides a mirror holder 30 having a mirror fixed thereto.
And a pivot plate 4 attached to the mirror holder.
0, the pivot plate 40 is tilted, and the mirror
And a unit 60 for adjusting the reflection angle of
Either the mirror holder or the pivot plate
One member is provided with a cylindrical bar 15 and the other member is
Provided with a fitting claw 10 in which a pillar bar is detachably gripped and fitted.
The mirror holder on the pivot plate.
In the rearview mirror to be attached, the fitting claw is the circle
A fitting groove 19 for receiving and fitting the column bar therein;
The cylindrical bar is provided facing both ends of the mating groove , and
From the thick claws 11 and the thin claws 12 that are elastically sandwiched from both sides
And an auxiliary protruding outward from the tip of the fine claw portion 12.
The claw portion 13 is formed, and the inner wall of the auxiliary claw portion and the outer wall of the thin claw portion are formed.
A space 17 is formed between the cylindrical bar and the fitting groove.
When the tip of the fine claw part is widened
The tip of the fine claw is elastically restrained to prevent
And a regulating portion for supporting the supporting member . Contract
According to a second aspect of the present invention, there is provided a mirror holder mounting structure according to the first aspect.
In the construction, one end of the auxiliary claw portion 13 is
The other end is connected to the pivot plate 40.
Accordingly, a break occurs between the inner wall of the auxiliary claw and the outer wall of the thin claw.
The surface 17 has a space 17 having a substantially inverted V shape.
Further, according to the invention of claim 3, near one end of the mirror holder 30
And a hook 31 is formed near the other end.
Pivot mount attached to the mirror holder
The cylindrical bar is received and fitted near one end of the rate 40
A mating groove 19 is formed.
2. A hook bar (18) for engaging with a hook bar (18) is formed.
Or the invention of the mirror holder mounting structure described in 2.

[0012]

The operation of the present invention based on the above configuration will be described separately for the mounting load and the removal load. 1 and 3 show the structure of a conventional fitting claw, and FIGS. 2 and 4 are schematic sectional views showing the structure of a fitting claw according to the present invention.

1 and 3, the fitting claw 1 has claw portions 1a and 1b on both sides of a fitting groove 4, and the claw portions 1a and 1b are provided.
b is provided with tapered portions 3a and 3b . FIG. 2
4 and FIG. 4, the claw portion is constituted by the thick claw portion 1c and the fine claw portion 1d, and the force <P> for suppressing the tip of the fine claw portion 1d from opening is applied to the fine claw portion 1d. Have been. In this specification, <P> is used to indicate that P is a vector.
It will be described as follows. Further, in the following description, a case where the cylindrical bar 2 is displaced to the right (FIGS. 1 to 4) on the drawing with respect to the fitting claw 1 will be described. The validity of such assumption will be described in an embodiment.

(1) Mounting Load The mounting load will be described with reference to FIGS. In FIG. 1, a load is applied in a vertical direction (downward in FIG. 1) from a state shown by a solid line (a state in the middle of fitting, hereinafter referred to as a solid line state), and finally a state where a load <F1> is applied. think of. Then, the claw portion 1 on the side where the cylindrical bar 2 is in contact
b is deformed and fitted through a state shown by a dotted line (a state in the middle of fitting that is advanced from a solid line state, and is hereinafter referred to as a dotted line state).

Due to the deformation of the claw portion 1b, the tapered portion 3b
Is inclined more horizontally in the tapered portion 3b '. That is, in the solid line state of the claw portion 1b, the force <f1 which is a component of the reaction force of the load <F1> applied to the cylindrical bar 2 is applied.
> Changes its direction to force <f2>, and its magnitude also increases. Therefore, the force that resists the load <F1> increases, and as the deformation of the claw portion 1b progresses, the load <F1>
> Does not work effectively. Further, in order to fit the columnar bar 2 which has been displaced, it is necessary to correct this displacement. The force for correcting the displacement is a horizontal component (a component perpendicular to <F1>) of the force <f1> or the force <f2>. However, since the force <f1> changes its direction and becomes the force <f2> in accordance with the deformation of the claw portion 1b, the load <F1> does not effectively contribute to the spreading of the claw portion 1b, and the positional deviation is hardly corrected. Become.

On the other hand, in the case of the present invention as shown in FIG.
Since a force <P> for suppressing deformation is applied to the tip of d, the state of deformation is different from that in the above-described case. That is, the narrow claw portion 1d tends to spread as shown in FIG. 1 due to the contact of the cylindrical bar 2, but the force <P> suppresses this. For this reason, the thin claw portion 1d is deformed as if "bowing", and the tapered portion 3d is closer to a vertical surface than the solid line state, and the load <F1> acting on the cylindrical bar 2 in the solid line state is reduced. The reaction component force <f3> changes to a force <f4> whose direction has changed. Therefore, as the deformation of the thin claw portion 1d progresses, the load <F2> works effectively. Further, the force <f3> contributing to the positional deviation correction of the cylindrical bar 2 changes its direction, and the force <f3> changes.
f4>, the load <F2> as the deformation progresses
Will work effectively for position deviation correction.

(2) Removal Load Next, the removal load will be described with reference to FIGS. In FIG. 3, when the cylindrical bar 2 is to be removed by the load <F3>, the tip portions of the claw portions 1a and 1b provided symmetrically are widened, and the component force of the reaction applied to the cylindrical bar 2 <
f5> changes direction and changes to force <f6>. Therefore, as the deformation of the claws 1a and 1b progresses, the claws 1
The force for expanding a and 1b is increased.

On the other hand, in the case of FIG. 4, the fitting claw 1 is a thick claw portion 1c.
And the thin nail portion 1d, and the thin nail portion 1d is more easily deformed. However, since the tip of the thin nail portion 1d is supported by the force <P>, the thin nail portion 1d is deformed as if "bowing" in the same manner as when the cylindrical bar 2 is attached. Due to this deformation, a gap S is generated in the central portion between the cylindrical bar 1 and the thin claw portion 2. Therefore, even if the force applied to the cylindrical bar 2 changes from the force <f7> to the force <f8>, a force <P> for suppressing the deformation of the thin claw 1d is applied to the tip of the thin claw 1d. Therefore, the load <F4> does not work effectively as compared with the case of FIG. 3 even if the deformation advances, and the component <f7> of the reaction of the load <F4>,
The spread of the thin claw portion 1d due to <f8> is suppressed.

As described above, a thin claw portion is provided in a direction in which the cylindrical bar is displaced, and a thick claw portion is provided at a position facing the column bar.
In addition, by applying a force that suppresses the spread of the distal end portion of the fine claw portion, it is possible to effectively correct the positional deviation and prevent the fitting claw from being damaged.
Further, when the cylindrical bar is fitted to the fitting claw, the mounting load can be effectively applied, and when the fitting is released, a large removal load is required.

[0020]

An embodiment of the present invention will be described with reference to FIGS. Figure 5 shows a perspective view of a fitting claw according to the present invention, the fitting claw 10 has a fitting groove 19, the engagement groove 1
Futoshitsume unit 11 and Hosotsume portion 12 having a tapered portion 16 which is inclined in a direction toward the said engagement groove 19 is provided opposite the ends of the 9. An auxiliary claw portion 13 (a regulating portion) is provided at a distal end portion of the fine claw portion 12, and the other end of the auxiliary claw portion 13 is integrally formed with a pivot plate 18 (plate). Therefore, the thin claw portion 12 and the auxiliary claw portion 13 are formed in an inverted V shape (or an inverted U shape ) with the buffer space 17 interposed therebetween.

The auxiliary claw portion 13 generates the force <P> described in the section of the action, and as described above,
The extension of the tip is suppressed. The auxiliary claw portion 13 is integrally formed of the same member as the pivot plate 18 and the like, and has elasticity. Therefore, the extension of the thin claw portion 13 is not completely restricted, and the auxiliary claw portion 12 can be appropriately deformed. It goes without saying that these do not need to be integrated.

Next, a door mirror in which the pivot plate having the fitting claws is attached to a mirror holder will be described. FIG. 6 is a partial cross-sectional view of the door mirror 50 showing a state when the pivot plate 40 having the fitting claws 10 is attached to the mirror holder 30. In the figure, the left figure shows a state before mounting, and the right figure shows a state immediately before completion of mounting. FIG. 7 is a view showing the arrangement positions of the fitting claws 10, the hooks 31 and the like, and corresponds to the rear view of FIG. The mirror holder 30 fixes the mirror 32 to the front surface, and has the cylindrical bar 15 and the hook bar 18 on the rear surface. The pivot plate 40 is provided with a fitting claw 10 at a position facing the cylindrical bar 15, and a hook 31 at a position facing the hook bar 18. Reference numeral 60 denotes an actuator unit that changes the reflection angle of the mirror 32 by electrically tilting the pivot plate 40.

In the above configuration, the pivot plate 40
Hook 31 is hooked on hook bar 18 of mirror holder 30 . At this time, if the hook bar 18 is not correctly inserted into the groove 31a of the hook 31, the positional shift between the fitting claw 10 and the cylindrical bar 15 occurs. In the above configuration, the positional deviation between the cylindrical bar 15 and the fitting claw 10 is always shifted from the hook bar 18 toward the fitting claw 10. Therefore, the thin claw portion 2 and the auxiliary claw portion 13 are provided in this portion. In this state, when a load is applied, the thin claw portion 13 and the auxiliary claw portion 13 are mainly deformed, and the cylindrical bar 15 is fitted while correcting the positional deviation. The arrangement of the fitting claws and hooks is not limited to that shown in FIG. 7, but may be arranged as shown in FIG.

[0024] In the door mirror as described above, collected and mounting load is required in assembling the mirror holder
FIG. 9 shows the evaluation result of the removal load required for removal . In addition, the evaluation was performed by setting the environmental temperature to -30, assuming summer and winter.
C., room temperature (room temperature) and 80.degree. C. were evaluated. As can be seen from FIG. 9, by using the mirror holder mounting structure according to the present invention, the removal load can be made about twice as large as the mounting load, and good results can be obtained. In the above description, the case where the fitting claws are provided on the mirror holder and the cylindrical bar is provided on the pivot plate has been described. However, the configuration may be reversed as shown in FIG.

[0025]

As described above, the present invention provides a
A fitting groove 19 for receiving and fitting the cylindrical bar therein;
The cylindrical bar is provided to face both ends of the fitting groove, and
Are referred to as a thick claw portion 11 and a thin claw portion 12 which elastically sandwich the
And project outward from the tip of the thin claw portion 12.
The auxiliary claw portion 13 is formed, and the inner wall of the auxiliary claw portion and the thin claw portion are formed.
Form a space 17 between the outer wall and the cylindrical bar,
When inserted into the fitting groove, the tip of the fine claw is widened.
The tip of the fine claw portion for suppressing the tendency to bend
Is provided with a regulating part that elastically supports
Therefore , when the mirror holder is assembled, even if the cylindrical bar and the fitting claw are misaligned, the misalignment can be efficiently corrected, so that the fitting claw can be prevented from being damaged. In addition, Mi
When assembling the roller holder and pivot plate, it is possible to assemble with a small assembly load and remove it.
At times , it has become possible to adopt a configuration that requires a large removal load. For this reason, assembling of the door mirror was facilitated, and reduction in the production cost of the door mirror could be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view for explaining the action of a mounting load of a conventional configuration.

FIG. 2 is a schematic cross-sectional view for explaining the action of the mounting load of the configuration of the present invention.

FIG. 3 is a schematic cross-sectional view for explaining the action of a removal load of a conventional configuration.

FIG. 4 is a schematic cross-sectional view for explaining the action of the removal load of the configuration of the present invention.

FIG. 5 is a perspective view of a fitting claw applied to the description of the embodiment of the mirror holder mounting structure according to the present invention.

FIG. 6 is a partial cross-sectional view of a door mirror illustrating attachment of a mirror holder and a pivot plate according to the present invention.

FIG. 7 is a rear view showing attachment positions of the fitting claws and hooks of FIG. 6;

8 is a rear view showing another embodiment of the mounting position shown in FIG. 7;

FIG. 9 is a diagram showing experimental data for evaluating the effect of the configuration of the present invention.

FIG. 10 is a cross-sectional view when a fitting claw and a cylindrical bar are disposed in reverse.

FIG. 11 is a sectional view of a door mirror applied to the description of a conventional configuration.

12 is a sectional view of a door mirror showing another example of the conventional configuration shown in FIG.

FIG. 13 is a partial cross-sectional view of a fitting claw for describing a problem in a conventional configuration.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Fitting claw 11 Thick claw part 12 Thin claw part 13 Auxiliary claw part (restriction part) 15 Cylindrical bar 18 Hook bar 19 Fitting groove part 31 Hook 32 Mirror 30 Mirror holder 40 Pivot plate (plate) 60 Actuator unit

Claims (3)

(57) [Claims] 1. A mirror holder to which a mirror is fixed.(3
0) and a pivot play attached to the mirror holder
(40) and the pivot plate (40) is tilted.
And a unit for adjusting the reflection angle of the mirror (6).
0), wherein the mirror holder or the pivot
A cylindrical bar (15) is installed on either member of the rate.
The cylindrical bar is detachably gripped and fitted to the other member.
The mirror holder is provided with a fitting claw (10)
To the rearview mirror attached to the pivot plate
hand,  The fitting clawReceives and fits the cylindrical bar inside
A fitting groove (19);Facing each other
Is, And elastically sandwiches the cylindrical bar from both sidesThick nail
(11)And fine claws(12) and the thin nail portion
Auxiliary claw (13) projecting outward from the tip of (12)
To form a space between the inner wall of the auxiliary pawl and the outer wall of the thin pawl.
Forming (17),  The cylindrical bar was inserted into the fitting groove.sometimes,Said
Prevents the tip of the thin nail from trying to spreadfor,
Elastically supports the tip of the thin clawWith a regulation section
A mirror holder mounting structure. 2. One end of an auxiliary claw portion (13) is connected to said thin claw portion.
The other end is connected to the pivot plate (40) , and the inner wall of the auxiliary claw is connected to the thin claw.
A space (17) whose cross section is almost inverted V-shaped between the outer wall of
Are formed, the mirror holder mounting structure according to claim 1, wherein. 3. A circle near one end of the mirror holder (30).
A pillar bar (15) is formed, and a hook (31) is provided near the other end.
Is formed, and a pivot is attached to the mirror holder.
Receiving the cylindrical bar inside near one end of the plate (40)
A fitting groove (19) to be inserted and fitted is formed, near the other end.
A hook bar (18) for engaging with the hook is formed at
And which, according to claim 1 or 2 mirror holder mounting structure according.